Should I expect front diff vibrations after a 1.75" lift?

Planning my lift... is it common enough to have the front diff vibrations after lifting that I should pre-order the ECGS Front Diff Bushing? Being in Canada adds cost to the bushing and CV Shaft that goes along with installing it, and ordering both before actually running into the issue adds potentially unnecessary cost to my lift.

Truck is a 2005 4x4 TRD-S QCLB w/ 90 000 miles, not even the faintest hint of a vibration or noise from the front diff as it stands now.

Should I spend the extra 200$ and get the bushing and CV shaft prior to installing my lift, or hope that I don't have issues? Because my shop is quite a ways from where I live, It would be several weeks after my lift before I did the bushing if I didn't have it pre-ordered.

 

I put a 3" lift on mine, no vibes. I don't think front diff vibes are as common as drive shaft dives in the rear. I would wait and see and save your money.

 

I shouldn't have any problems with drive shaft vibes because i'm keeping it fairly low (1.5" in the rear), so i'm not too concerned there. Took a look at my carrier bearing last night and it's more than fine.

I guess i'll go ahead and hope I don't see any problems.
I think i'll lift the front end first, drive it around, and if I feel any vibes i'll drop the 5100's back down to stock height while I order the ECGS bushing and wait for it to arrive.